Pyrope and Bustamite Physical Properties

Pyrope

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in water

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

3.62-3.873.32-3.43

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

{100} perfect; {110} and {1 1 0} good; {010} poor

1.7 Mohs Hardness

7-7.55.5-6

2 10

1.8 Chemical Composition

Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Pyrope and Bustamite Chemical Formula

While comparing Pyrope and Bustamite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Pyrope and Bustamite chemical formula.

Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Pyrope and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrope and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrope and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Pyrope is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.